One way to accomplish this is to insert a key for a different wafer lock and rock it up and down while you attempt to turn it.
25+ How To Pick A File Cabinet Lock
Images. For more tips, including how to. Many file cabinets use wafer locks, so you may also want to consider picking it yourself.
Can A Locksmith Make A Key From A Lock from unitedlocksmith.net
It's also a fun hobby, not this is all you need to understand to pick a simple lock. They use cylindrical keys to manipulate a circle of six to eight pins to release the closure. I tried all the suggestions, including adam savage's, in this thread, to no avail.
One way to accomplish this is to insert a key for a different wafer lock and rock it up and down while you attempt to turn it.
You'll find this unique type of lock on smaller containers such as file cabinets or rv compartments. This is for educational purposes so if you were to lock yourself out (like i have) or lost the key to your desk or file cabinet, you aren't screwed. Tubular locks are similar to pin tumblers. Fortunately, filing cabinet locks are typically low quality and can be bypassed with some simple tools and a finesse.